DE69625544T2 - Dental handpiece with central injection of coolant - Google Patents

Dental handpiece with central injection of coolant

Info

Publication number
DE69625544T2
DE69625544T2 DE69625544T DE69625544T DE69625544T2 DE 69625544 T2 DE69625544 T2 DE 69625544T2 DE 69625544 T DE69625544 T DE 69625544T DE 69625544 T DE69625544 T DE 69625544T DE 69625544 T2 DE69625544 T2 DE 69625544T2
Authority
DE
Germany
Prior art keywords
bar
dental handpiece
coolant
central injection
hollow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
DE69625544T
Other languages
German (de)
Other versions
DE69625544D1 (en
Inventor
Takasuke Nakanishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nakanishi Inc
Original Assignee
Nakanishi Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nakanishi Inc filed Critical Nakanishi Inc
Publication of DE69625544D1 publication Critical patent/DE69625544D1/en
Application granted granted Critical
Publication of DE69625544T2 publication Critical patent/DE69625544T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/02—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools
    • A61C1/05—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design characterised by the drive of the dental tools with turbine drive
    • A61C1/052—Ducts for supplying driving or cooling fluid, e.g. air, water
    • A61C1/055—Ducts for supplying driving or cooling fluid, e.g. air, water through the working tool, e.g. hollow burr

Abstract

A center injection type dental handpiece (I) contains a cutting bar (1) having a hollow (20) axially penetrating the bar (1), holding means (14) for detachably holding the bar (1), rotating means for rotating the bar (1), a water injection nozzle (20) communicating with a cooling water feed source. The water injection nozzle (20) is inserted into the hollow (20) of the bar (1) for injecting a cooling water from the tip (1'') of the bar (1). The handpiece (I) further contains a packing (30) for sealing a gap between the outer periphery of the nozzle (20) and the inner periphery of the bar (1) at the proximal end (1') of the bar.
DE69625544T 1995-05-31 1996-05-29 Dental handpiece with central injection of coolant Expired - Fee Related DE69625544T2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7133142A JP2717520B2 (en) 1995-05-31 1995-05-31 Center irrigation dental handpiece

Publications (2)

Publication Number Publication Date
DE69625544D1 DE69625544D1 (en) 2003-02-06
DE69625544T2 true DE69625544T2 (en) 2003-11-20

Family

ID=15097730

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69625544T Expired - Fee Related DE69625544T2 (en) 1995-05-31 1996-05-29 Dental handpiece with central injection of coolant

Country Status (5)

Country Link
US (1) US5816803A (en)
EP (1) EP0745357B1 (en)
JP (1) JP2717520B2 (en)
AT (1) ATE230240T1 (en)
DE (1) DE69625544T2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT413330B (en) * 2002-04-18 2006-02-15 W & H Dentalwerk Buermoos Gmbh TORQUE TRANSMISSION FOR A SURGICAL OR DENTAL, ROTATING TOOL
JP5638786B2 (en) 2009-03-06 2014-12-10 株式会社ナカニシ Water stop structure of dental handpiece head
JP6312071B2 (en) * 2011-04-11 2018-04-18 国立大学法人豊橋技術科学大学 Medical drill unit and drill and medical processing device
JP6572202B2 (en) 2013-03-15 2019-09-04 ストライカー・コーポレイション End effector of surgical robot manipulator
US9572631B2 (en) * 2014-03-05 2017-02-21 Form And Function Dental Services, P.C. Asymmetrical dental tool with cooling channels

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400912A (en) * 1944-12-29 1946-05-28 Vernon E Britt Dental appliance
US2442033A (en) * 1945-07-28 1948-05-25 John E Brantly Fluid circulating dental drill and bit
DE1297809B (en) * 1964-06-06 1969-06-19 Nelson Milton Edward Dental angular handpiece with turbine drive
JPS5642296B2 (en) * 1973-06-18 1981-10-03
JPH01110357A (en) * 1987-10-26 1989-04-27 Matsutani Seisakusho Co Ltd Dental handpiece
JPH01110358A (en) * 1987-10-26 1989-04-27 Matsutani Seisakusho Co Ltd Dental handpiece
DE3828866C1 (en) * 1988-08-25 1990-02-08 Kaltenbach & Voigt Gmbh & Co, 7950 Biberach, De
EP0374276B1 (en) * 1988-12-19 1995-04-19 Matsutani Seisakusho Co. Ltd., Dental burr and dental handpiece
US5275558A (en) * 1992-12-15 1994-01-04 Seney John S Dental handpiece, bur mount operating system
FR2700942A1 (en) * 1993-02-01 1994-08-05 Peltier Patrick Improvement of training devices, called "contra-angles", for rotary tools used in bone surgery, in particular in dental surgery.
DE4304514C1 (en) * 1993-02-15 1994-02-24 Siemens Ag Dental instrument containing cooled tool - has coolant outlet free of contact with tool end face containing passage with gap sealed by compressed air at higher pressure
US5531596A (en) * 1995-05-25 1996-07-02 Melde; Chris R. Dental hand piece with water distribution system

Also Published As

Publication number Publication date
DE69625544D1 (en) 2003-02-06
EP0745357B1 (en) 2003-01-02
US5816803A (en) 1998-10-06
JPH08322853A (en) 1996-12-10
EP0745357A1 (en) 1996-12-04
ATE230240T1 (en) 2003-01-15
JP2717520B2 (en) 1998-02-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Representative=s name: BOCKHORNI & KOLLEGEN, 80687 MUENCHEN

8339 Ceased/non-payment of the annual fee